+ double accel_along() { return series.value(AltosFlightSeries.accel_along_name, indices); }
+ double accel_across() { return series.value(AltosFlightSeries.accel_across_name, indices); }
+ double accel_through() { return series.value(AltosFlightSeries.accel_through_name, indices); }
+
+ double gyro_roll() { return series.value(AltosFlightSeries.gyro_roll_name, indices); }
+ double gyro_pitch() { return series.value(AltosFlightSeries.gyro_pitch_name, indices); }
+ double gyro_yaw() { return series.value(AltosFlightSeries.gyro_yaw_name, indices); }
+
+ double mag_along() { return series.value(AltosFlightSeries.mag_along_name, indices); }
+ double mag_across() { return series.value(AltosFlightSeries.mag_across_name, indices); }
+ double mag_through() { return series.value(AltosFlightSeries.mag_through_name, indices); }
+
+ void write_advanced() {